2024
article
OpenAlex
Alex Laguë, Bodo Schwabe, Renée Hložek, David J. E. Marsh et autres
The era of precision cosmology allows us to test the composition of the dark matter. Mixed ultralight or fuzzy dark matter (FDM) is a cosmological model with dark matter composed of a combination of particles of mass $m\ensuremath{\le}{10}^{\ensuremath{-}20}\text{ }\text{ }\mathrm{eV}$, with an …
ca, us, de, gb
(code pays fourni par la source)
Accès ouvert
2023
preprint
OpenAlex
Alex Laguë, Bodo Schwabe, Renée Hložek, David J. E. Marsh et autres
The era of precision cosmology allows us to test the composition of the dark matter. Mixed ultralight or fuzzy dark matter (FDM) is a cosmological model with dark matter composed of a combination of particles of mass $m\leq 10^{-20}\;\mathrm{eV}$, with an astrophysical …
Accès ouvert
2022
article
OpenAlex
Bodo Schwabe, J. C. Niemeyer
Fuzzy dark matter (FDM) made of ultralight bosonic particles is a viable alternative to cold dark matter with clearly distinguishable small-scale features in collapsed structures. On large scales, it behaves gravitationally like cold dark matter deviating only by a cutoff in the …
es, de
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Accès ouvert
2022
article
OpenAlex
Benedikt Eggemeier, Bodo Schwabe, J. C. Niemeyer, Richard Easther
The Universe may pass through an effectively matter-dominated epoch between inflation and big bang nucleosynthesis during which gravitationally bound structures can form on subhorizon scales. In particular, the inflaton field can collapse into inflaton halos, forming ``large scale'' structure in the very …
de, es, nz
(code pays fourni par la source)
Accès ouvert
2020
article
OpenAlex
Bodo Schwabe, Mateja Gosenca, Christoph Behrens, J. C. Niemeyer et autres
The distinctive effects of fuzzy dark matter are most visible at nonlinear galactic scales. We present the first simulations of mixed fuzzy and cold dark matter, obtained with an extended version of the nyx code. Fuzzy (or ultralight or axionlike) dark matter …
de, nz
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Accès ouvert
2020
article
OpenAlex
Jan Veltmaat, Bodo Schwabe, J. C. Niemeyer
We present zoom-in simulations of fuzzy dark matter (FDM) halos including baryons and star formation with sufficient resolution to follow the formation and evolution of central solitons. We find that their properties are determined by the local dark matter velocity dispersion in …
de
(code pays fourni par la source)
Accès ouvert
2019
dissertation
OpenAlex
Bodo Schwabe
Despite being a cornerstone of the standard model of cosmology, the exact nature of dark matter (DM) remains unknown. The lack of evidence for weakly interacting massive particles that could constitute DM is generating increasing interest in alternative candidates. These include the …
Accès ouvert
2019
preprint
OpenAlex
Daniel Grin, Mustafa A. Amin, Vera Gluscevic, Renée Hlǒzek et autres
International audience
us, fr
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Accès ouvert
2018
article
OpenAlex
Jan Veltmaat, J. C. Niemeyer, Bodo Schwabe
We simulate the formation and evolution of ultralight bosonic dark matter halos from cosmological initial conditions. Using zoom-in techniques, we are able to resolve the detailed interior structure of the halos. We observe the formation of solitonic cores and confirm the core-halo …
de
(code pays fourni par la source)
Accès ouvert
2018
article
OpenAlex
Xiaolong Du, Bodo Schwabe, J. C. Niemeyer, David Bürger
We study tidal stripping of fuzzy dark matter (FDM) subhalo cores using simulations of the Schr\"odinger-Poisson equations and analyze the dynamics of tidal disruption, highlighting the differences with standard cold dark matter. Mass loss outside of the tidal radius forces the core …
de
(code pays fourni par la source)
Accès ouvert
2017
article
OpenAlex
Xiaolong Du, Christoph Behrens, J. C. Niemeyer, Bodo Schwabe
In the context of structure formation with ultralight axion dark matter, we offer an alternative explanation for the mass relation of solitonic cores and their host halos observed in numerical simulations. Our argument is based entirely on the mass gain that occurs …
de
(code pays fourni par la source)
Accès ouvert
2016
article
OpenAlex
Bodo Schwabe, J. C. Niemeyer, Jan Frederik Engels
Using three-dimensional simulations, we study the dynamics and final structure of merging solitonic cores predicted to form in ultralight axion dark matter halos. The classical, Newtonian equations of motion of a self-gravitating scalar field are described by the Schr\"odinger-Poisson equations. We investigate …
de
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